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BrianG · 08.18.2010, 10:55 AM

I really can't answer the purpose of the design, but what I said does stand. It's simple electronics and math, and they don't lie.

I know from experience that Spektrum receivers do tend to be finnicky with regards to power. Usually, adding a ~10,000uF capacitor (glitch busters) eliminates the problem.

Another potential issue could be the servo. If it is binding, very high torque, etc (basically pulls a lot of current), it could be causing the BEC itself to drop out, which causes the spektrum rx to hesitate.

The Mamba Max uses a linear regulator, which is good up to 2s (sometimes 3s if the servo load is small). Linear regulators are generally pretty darn tough and can handle all kinds of abuse gracefully. But above 2s, the internal BEC should be disabled and an external switching BEC should be used to keep it from thermalling. The MMPro uses a switching BEC. From experience, this BEC can supply a little over 2A before it drops-out.

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BrianG RC-Monster Admin Offline Posts: 14,609 Join Date: Nov 2005 Location: Des Moines, IA	08.18.2010, 10:55 AM I really can't answer the purpose of the design, but what I said does stand. It's simple electronics and math, and they don't lie. I know from experience that Spektrum receivers do tend to be finnicky with regards to power. Usually, adding a ~10,000uF capacitor (glitch busters) eliminates the problem. Another potential issue could be the servo. If it is binding, very high torque, etc (basically pulls a lot of current), it could be causing the BEC itself to drop out, which causes the spektrum rx to hesitate. The Mamba Max uses a linear regulator, which is good up to 2s (sometimes 3s if the servo load is small). Linear regulators are generally pretty darn tough and can handle all kinds of abuse gracefully. But above 2s, the internal BEC should be disabled and an external switching BEC should be used to keep it from thermalling. The MMPro uses a switching BEC. From experience, this BEC can supply a little over 2A before it drops-out.